Olson said on Monday that police received “new information” on Sunday and would be following up.

Olson urges the public to contact authorities with any information about Friday’s incident that would help lead to the arrest and conviction of the suspect.

Family members said the girl was waiting for her bus that takes her to Three Oaks Academy when she was snatched by a man who then took her to a nearby alley and assaulted her.

The girl is walked to the bus stop daily by her older brother, who then walks to his own bus stop nearby, the family said. The girl was taken as soon as the brother turned his back, her grandmother told The Chronicle.

Police said she was located 15 minutes later and had been assaulted.

Her grandmother said she was found naked and scared. She was taken to a local hospital Friday for treatment and returned to family members, the grandmother said.

Olson said that more than a dozen possible suspects had been checked out over the weekend and police received several tips, none of which identified the suspect.

Anyone with information about Friday’s abduction and assault is asked to call Muskegon Police at 724-6750, 911 or Silent Observer at 722-7463, which is offering a $1,000 reward for information leading to the arrest and conviction of the man.